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High Mileage Fuel Injector Cleaner

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The more an engine is driven, the more carbon deposits can build up on fuel injectors, intake valves and ports. Gumout® High Mileage Fuel Injector Cleaner is specially formulated to remove carbon deposits from engines with over 75,000 miles for restored engine performance and fuel economy. Learn more about the science behind Gumout.

Port/indirect fuel injectors, intake valves and ports
Future carbon buildup on port/indirect fuel injectors, intake valves and ports, combustion chamber
Best for
Restored performance and fuel economy in high mileage vehicles, reduced emissions
US Item #: 800001363

Specially formulated for vehicles over 75,000 miles. Oxygen sensor safe. Safe for use in turbocharged and supercharged vehicles. Will not void OEM/manufacturer’s warranty. Add entire bottle to nearly empty gasoline tank, then fill tank with up to 21 gallons of gasoline. For best results, do not refill tank until near empty. Use every 3,000 miles.


This product can expose you to chemicals including Naphthalene, which is known to the State of California to cause cancer. For more information go to

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Average rating:  
 12 reviews
by DAVID F on Gumout

I but this product at Home Depot for half of what Walmart sells it for. I use it for my 97 4RUNNER with 250, 000 miles. I don't know what they put in these tiny bottles but IT WORKS! I can easily notice the difference. Better performance, better power, smoother acceleration. The best $2 investment for better performance! I use a bottle every time I fill up.

by Muhammad Aftab on Gumout
Engine Knocking

Using this product second time in a row, my car is Honda city model 2006 done millage 150,000 km till now. I found drop in pick and my car engine knocking while running on road. Is this because of Gumout or some thing else.

by CaptainPogey on Gumout
Check engine light

Have been using this product on a regular basis. I use one bottle when the check engine light comes on in my 2005 Town and Country and the light goes out for months.

by crookedycook on Gumout
High Mileage Fuel Injector Cleaner

Was really impressed how it smoothed out the rough idleing and improved fuel mileage.

by Spider on Gumout
Never Failed!

I have Been A Long Time user of this product in all my High Mileage Vehicles , 191,000-220,000181,000 used by my sons in school and in the military one og]f which was used in the winters of North Dakota!

by GWATKINS on Gumout
great product!!!

Needed t clean out my carb so I brought this product. Did a great job on my old car with a lot of miles..

by darkcomputerguru on Gumout
No worries

Pour it right in your tank and it starts to work. You can feel the change right away.

by devil187 on Gumout
works great

i used the product on my 2000 Toyota it gots over 100000 miles on it i used it and it clean it all out i get better gas mileage now i would recommend it to all my friends

by Dickey on Gumout
It work

My car with 117,567 miles runs a lot better with this fuel system cleaner...thanks Gumout

by chevybaby71151 on Gumout

The imaginary line I once set to keep my wife away from my Chevy has been gone for years. A great product that helps insure the life of my child remains young and high on performance

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